College...Pre-Nursing

Kaylee • 20, future RN💉, FTM, October 18th💘
I'm currently taking my pre-requisites for nursing school. After this semester I would need two more pre-requisites: microbiology and a math. I was planning on applying for nursing school by January and attending for the fall semester. In order to take microbiology I need a passing grade in chemistry and at least a B to get into nursing. Today, after hours in the tutoring lab and money spent on a private tutor, I got my second exam back with a 58!!!! Just like the first one. I'm so furious at myself and disappointed. In order to pass the course with a C I would need an 87 which is unrealistic and now my tutor is going out of the country so that isn't even an option. Should I continue with school or drop out? I'm to the point where my GPA is borderline unsalvageable...I'm so depressed and feel like college is the only way to make it in life. I don't know what to do because I have A's in every other course that I'm taking. 
Sorry if this is long and ranty and not particularly relevant to this app😔